Question

I am reading records from file and inserting into database.

I am using DB2 database.

The records is like:

   abc    pqr  abcd

So before abc there are several spaces as well at the start of the record.

I am reading the file using SpringBatch program and inside field set mapper I am printing the string read from the file:

System.out.println("*" + fieldSet.readString("FULL_RECORD") + "*");

However, the result I am getting is:

*abc    pqr  abcd*

Which means that the leading spaces are not getting preserved.

The linetokenizer in my config file is:

<beans:property name="lineTokenizer">
  <beans:bean class="org.springframework.batch.item.file.transform.FixedLengthTokenizer">
    <beans:property name="columns" value="1-241"/>
    <beans:property name="names" value="FULL_RECORD"/>
  </beans:bean>
</beans:property>

I am using default line mapper class and passing above tokenizer as its property.

org.springframework.batch.item.file.mapping.DefaultLineMapper

How to preserve the leading spaces before each record?

Answer 1

take a look at the code

1. the readString methods of the DefaultFieldset use
2. String.trim()

just change

System.out.println("*" + fieldSet.readString("FULL_RECORD") + "*");

too

System.out.println("*" + fieldSet.readRawString("FULL_RECORD") + "*");

see DefaultFieldSet.readRawString()

Read the String value from column with given ‘name’ including trailing
whitespace (don’t trim).